System of braces for supporting the folding beds of folding cameras



J. BAILLE SYSTEM OF BRACES FOR SUPPORTING THE FOLDING BEDS 0F FOLDINGCAMERAS Fig. 3

Filed Oct. 30. 1922 A Fig. Z

7 vim 75M QIL. E a/ 2/ 1/1/15,

Patented Oct. 21, 1924.

UNITED STATES PATENT OFFICE.

JEANLOUISBAILLE, OI PARIS, FRANCE, ASSIGNOR T BlILIlEeLEMAlB/E 8c .FILS,,OF PARIS, FRANCE, A GmANY OF FRANCE.

SYSTEM OF BRACES FQR SUPPORTING THE FOLDING BEDS OF FOLDING CAMERAS.

A plication filed October 30, 1922.

T0 alt whom it may concern Be it known that I, JEAN LOUIS BAILLE, acitizen of the French Republic, residing 26 Rue Oberkampf, Paris,France, have invented new and useful Improvements in a System of Bracesfor Supporting the Folding Beds of Folding Cameras, of which thefollowing is the specification.

The present invention has for its object a 10 system of braces forsupporting the folding bed of a folding camera and for maintaining it ina rigorously fixed position.

This device is characterized in that the folding bed of the camera,jointed in a known manner on an axis integral with the frame, supportsabove its plane two jointing axes about which can pivot two stays, thedisplacement of which is guided in the frame by fixed abutments and eachof which comprises at its end a plane surface which comes in contact,when the folding bed is entirely folded down, with a correspondingsurface of the said folding bed; the stays have a certain resiliencyallowing to engage them, at the other end, on the correspondingabutments of the frame, and doing away with any play between the contactsurfaces.

The accompanying drawing illustrates, by way of example, a form ofconstruction of the invention.

Fig. 1 illustrates the apparatus in extended position.

Fig. 2 illustrates the apparatus in the medium position during folding.

Fig. 3 illustrates the apparatus completely folded.

The brace 4 is a solid member capable of pivoting about an axis 5secured on the. support 3.

The support 3 is rigidly attached to the folding bed 2, on the one handby the rivets 6, on the other hand by the axis 7 of the folding top.

The brace takes a bearing on a finger 8, placed in the frame of theapparatus, ad-

justed in such a manner that the apparatus being unfolded, the foldingbed is rigorously at right angles to the sensitive surface.

The arrangement of the braces is characterized by the very largedistances w and (11 separating the axis of the hinge of the fol ing bedfrom the pivot 5; it allows of extend- Serial No. 597,986.

ing the member 3 up to about three fourths of the length of th foldingtop.

The brace 4, in order to acquire a certain resiliency, is slotted at itslower end; the latter by bearing on a projecting counterpart of thesupport 3 forces the upper part of the member 4 to engage tightly withthe finger 8. The folding bed being carried at a point remote from itshinge, the rigidity and strength of its attachment are thus raised tothe highest degree.

It is obvious that the angle formed by the contact surfaces between thestay 5 and the support 3 with the plane of the folding bed may be of anydegree whatever, provided that, in the open position, the plane of thefolding bed is rigorously at right angles to the plane of the sensitiveplate.

What I claim as my invention and desire to secure by Letters Patent is:

1. In a folding photographic apparatus, a frame, a folding bed, a jointconnecting the folding bed to the frame, two braces jointed on thefolding bed so as to be capable of rocking at right angles to its plane,an abutment for each brace and integral with the folding bed, anabutment for each brace and integral with the frame.

2. In a folding photographic apparatus, a frame, a folding bed, a jointconnecting the folding bed to the frame, on the folding bed so as to becapable of rocking at right angles to its plane, an abutment for eachbrace and integral with the folding bed, an abutment for each brace andintegral with the frame, means for resiliently locking the brace-s inopen position.

3. In a folding photographic apparatus, a frame, a folding bed, a jointconnecting the folding bed to the frame, two braces jointed on thefolding bed so as to be capable of rocking at right angles to its plane,an abutment for each brace and integral with the foldingbed, an abutmentfor each brace and integral with the frame, each brace bein slottedparallel to its surface of cont-act with the abutment of the folding bedand near this surface to provide a resilient tongue, a hook at the otherend of each brace.

4. In a folding photographic apparatus, a frame, a folding bed, a jointconnecting the folding bed to the frame, two side checks intwo bracesointed tegral with the folding bed and at right angles to its plane, twobraces jointed on the said cheeks and in their plane, an abutment foreach brace presented by each cheek, an abutment for each brace andintegral. with the frame, each brace being slotted parallel toits'surface of contact with the abutment of the folding bed and nearthis surface so as to provide a resilient tongue, a hook at the otherend of each brace.

In testimony whereof I have signed my name to this specification.

JEAN LOUIS BAILLE;

